Ulcer

[ohfortunate1]

Hey guys need a quick solution . I've got a koi that has an ulcer on its lower gill plate . Just notice it today due to its strange swimming behaviour . I had issue with 1 thing or another this whole season. I've bit the bullet and done a 4 hour Pp session about 11 days ago . 20% water change and then on Tuesday gone i put a course of Formalin @30% mixed with malachite to finish off what ever little shits were under the mucus of my fish . Now this fish wasn't showing any signs of anything until today when I spotted this ulcer. I'm really jot kean on adding 1 med after another but really dont want to lose this fish . I've done a scrape this morning from a fish that was originally flashing and only dead parasites on it . What can I add in a few days to resolve this . What's the best stuff to put in to entire pond . Or do I just FMG again ?. TIA Ian

[Alburglar]

Just keep an eye on it and tamodine on the wound every 2-3 days or once a week once it starts to heal.